ISSUES. 

 Table of Comporative Measurements. 



133 



Body : 



(Greatest height 



Greatest width 



Height at vcutrals 



Least height of tail 



Length of caudal peduncle . 

 Head : 



Greatest length 



Greatest width 



Width of intcToibital area . . 



Length of snout , 



Length of opeiciilum 



Length of upper jaw 



Length of mandible 



Long diameter of eye 



Dorsal (spinous) : 



Distance from snout 



Length of base 



Length of iirst spine 



Length of second spine 



Length of last spine , 



Dorsal (soft) : 



Length of base 



Length of antecedent spine . 



Length of first ray 



Length of longest ray 



Length of last ray 



Anal : 



Distance from snout 



Length of base 



Lengt h of first spine 



Length of first ray 



Length of longest ray 



Caudal :" 



Length of middle rays 



Length of external rays 



Pectoral': 



Distance from snout 



Length 



Ventral : 



Distance from snout 



Length 



Gasterosteus 

 pungitius* 

 Linn, (aver- 

 ages of 7 ex- 

 amples). 



lOOOths of 

 length. 



.170 

 .100 

 .170 

 .036 

 .150 



.265 

 .110 

 .062 

 .062 



.084 

 .070 

 .080 

 .082 



.286 

 .276 

 .066 

 .066 

 .050 



.245 

 .080 

 .140 

 .140 



.570 

 .220 

 .086 

 .130 

 .130 



.110 

 .137 



.300 

 .160 



.370 

 .121 



G. pungitius 

 var. brachy- 

 poda Bean 

 (averages of 

 8 examples). 



lOOOths of 

 length. 



.187 

 .107 

 .177 

 .032 

 .140 



.265 

 .113 

 .060 

 .060 

 .080 

 .066 

 .076 

 .073 



.276 

 .310 

 .057 

 .058 

 .050 



.250 

 .060 

 .120 

 .120 

 .040 



.600 

 .235 

 .064 

 .120 

 .120 



.117 

 .134 



.300 

 .160 



.357 

 .083 



Pygosteus occidentalis (C. & V.) Brovoort, from which the averages were taken. 



Table of Measurements. 

 Genus, Gasterosteun. 



Current number of specimen . 



Locality . 



Extreme length to origin of middle caudal rays 



Length to end of external caudal rays 



Body : 



Greatest height 



Greatest width 



Height at ventrals 



Least height of tail 



Length of caudal peduncle 



'Pungitius Pungitius 

 L., 22,015 a. I L., 22,015 6. 



Christiania, ISTorway, E.. Col- 

 lett. 



Millimetres 

 and lOOths 

 of length. 



.18 

 .10 

 .18 

 .04 

 .13 



Millimetres 

 and lOOths 

 of length. 



Blanchardi Sauvago 

 {type) (39) 21,139. 



Boston, TJ. S. ' 



Millimetres and lOOths 

 of length. 



.16 

 .00 

 .16 

 .04 

 .135 



